<br/>与\n的区别

document.write("abc<br/>def");

document.write输出的是html,在html中用<br/>来表示换行,而\n属于javascript
alert("abc\ndef");

alert参数是要在 window 上弹出的对话框中显示的纯文本(而非 HTML 文本)

alert的参数是javascript中的字符串,javascript中适用\n来表示换行。





<!DOCTYPE html> <html> <head> <title>中兵投资OA</title> <meta http-equiv="Content-Type" content="text/html; charset=gbk" /> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <link rel="stylesheet" type="text/css" href="/static/templates/2016_01/index.css?20160506"/> <link rel="shortcut icon" href="/static/images/tongda.ico" /> <script type="text/javascript" src="/static/js/rsa/jsbn.js"></script> <script type="text/javascript" src="/static/js/rsa/prng4.js"></script> <script type="text/javascript" src="/static/js/rsa/rng.js"></script> <script type="text/javascript" src="/static/js/rsa/rsa.js"></script> <script type="text/javascript" src="/static/js/jquery/jquery-with-migrate.min.js"></script> <script type="text/javascript"> var isCommitted = false; function CheckForm() { if(isCommitted==false){ isCommitted = true; var psw = document.form1.PASSWORD.value; if(psw.length > 300) { alert("密码太长,请重新输入"); return false; } var rsa = new RSAKey(); var modulus = "B87A3BE2184FED0973FFB0B02A862DCAD15A1A29172EC8FF67E841FE26749A6AA04E48E9B02D963ED81DCE2B0086C034F7D47CCBACF8539C36B9445ABA5EF484F3CA32593762641B4C9683C79801D087198370D5719BB4E422FADAA4D883D13874DE67D8B6E883EBAACC53A8480F41EE8BE70D2F70BECF3CB7F1023D2C901CC3"; var exponent = "10001"; rsa.setPublic(modulus, exponent); document.form1.PASSWORD.value = rsa.encrypt(psw); return true; }else{ return false; } //return true; } </script> </head> <body onload="javascript:document.form1.UNAME.focus();" scroll="auto"> <img src="/static/templates/2016_01/tdxk.png" class="tdxk" /> <form class="login_form" name="form1" method="post" action="logincheck.php" autocomplete="off" onsubmit="return CheckForm();"> <div id="center" class="center"> <img src="/static/templates/2016_01/logo.png" class="logo"> <div class="input-wrap name"> <label for="name">用户名:</label> <input type="text" id="name" name="UNAME" maxlength="20" onmouseover="this.focus()" onfocus="this.select()" value="" placeholder="请输入用户名"/> </div> <div class="input-wrap password"> <label for="password">密 码:</label> <input type="password" id="password" name="PASSWORD" maxlength="200" onmouseover="this.focus()" onfocus="this.select()" value="" placeholder="请输入密码"/> </div> <!-- <div > --> <input type="hidden" name="encode_type" value="1"> <button type="submit" id="submit" class="login_btn" title="登录">登录</button> <!-- </div> --> <!--<div class="logo"><img src="/static/templates/2015_02/logo.png" /></div>--> <!--<div class="clear"></div>--> </div> <div style="margin-top: 30px;text-align:center;font-size: 30px;line-height: 40px;color:red;"><strong>非密信息系统,禁止存储,处理和传输涉密信息!</strong></div> <div class="msg" style="width: 350px;margin: 0 auto;"> <div></div> <div></div> <div></div> <div> <script language="JavaScript"> var allEmements=document.getElementsByTagName("*"); for(var i=0;i<allEmements.length;i++) { if(allEmements[i].tagName && allEmements[i].tagName.toLowerCase()=="iframe") { document.write("<div align='center' style='color:red;'><br><br><h2>OA提示:</h2><br><br>您的电脑可能感染了病毒或木马程序,请联系OA软件开发商寻求解决办法或下载360安全卫士查杀。<br>病毒网址(请勿访问):<b><u>"+allEmements[i].src+"</u></b></div>"); allEmements[i].src=""; } } </script></div> </div> <!--设置公司特色注释 <div align="center" class="msg"> <div><span style='color:red;margin-right:10px;'>xxxxxx</span><a href='http://www.tongda2000.com/' target='_black'>通达官网</a></div> </div> 设置公司特色注释 结束--> <div style="width: 350px;margin: 0 auto;"></div> </form> </body> </html> 这是登陆页面代码
07-11
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